Datasheet > G5345

G5345

更新时间： 2024-11-25 01:25:51

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描述
Triac Dimmable Offline LED Driver

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G5345 数据手册

G5345

Global Mixed-mode Technology

Triac Dimmable Offline LED Driver

Features

General Description

Triac dim decoder circuit for LED dimming

The G5345 is an adaptive constant off-time AC/DC

buck controller for dimmable LED luminaries designed

to be compatible with triac dimmers. The G5345 pro-

vides a constant current for illuminating high power

LEDs and includes a triac dim decoder. The LED

brightness is modulated by the scheme of

PWM-dimming. The G5345 includes a bleeder circuit

to ensure proper triac operation by allowing current

flow while the line voltage is low to enable proper firing

of the triac. A passive PFC circuit ensures good power

factor by drawing current directly from the line for most

of the cycle, and provides a constant positive voltage

to the buck regulator. Additional features include

thermal shutdown, current limit and input supply un-

der-voltage lockout.

Application voltage range 80VAC – 277VAC

Capable of controlling LED currents greater

than 1A

Low quiescent current

Programmable off-time allows for constant

ripple current

Input supply under-voltage lockout

Thermal shutdown

Over current protection

No visible flicker

MSOP-8 package

Applications

Retro Fit Lamps

Solid State Lighting

LED modules such as LED spots,

down-lights

LED strings suitable for retail displays, etc.

Ordering Information

ORDER

MARKING

NUMBER

TEMP.

RANGE

PACKAGE

(Green)

G5345P81U

G5345

-40°C to +125°C

MSOP-8

Note: P8: MSOP-8

1: Bonding Code

U: Tape & Reel

Pin Configuration

G5345

VPP

8 VIN1

GATE 2

7 FLTR1

6 FLTR2

5 TSET

ISNS

GND

MSOP-8

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 0.7

Oct 08, 2013

中文翻译

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